01 - Set Instant Pot to Sauté function. Melt butter, then add diced onion and cook 2-3 minutes until softened. Add minced garlic and cook 30 seconds until fragrant.
02 - Sprinkle flour into pot, stirring constantly for 1 minute to form a smooth roux and cook out raw flour taste.
03 - Slowly pour in vegetable broth while whisking to prevent lumps. Add broccoli florets and grated carrot. Season with paprika, nutmeg, salt, and pepper.
04 - Seal lid and set to Manual High Pressure for 5 minutes. Once complete, perform quick release and open lid.
05 - Use immersion blender to purée soup to desired consistency, either completely smooth or slightly chunky.
06 - Set Instant Pot to Sauté Low. Stir in milk and heavy cream. Gradually add shredded cheddar cheese, stirring until fully melted and incorporated.
07 - Taste and adjust seasoning with salt and pepper as needed. Serve immediately, garnished with additional cheddar or fresh herbs if desired.